Lewis g



(No Model.)

L. G. REYNOLDS. MACHINE FOR PARAPFINING PAPER.

No. 559,605. Patented May 5, 1896.

UNITED STATES PATENT OEErcE.

LElVIS G. REYNOLDS, OF DAYTON, OHIO, ASSIGNOR TO THE REYNOLDS- EASTONCOMPANY, OF SAME PLACE.

MACHINE FOR PARAFFINING PAPER.

SPEGIFICATION forming part of Letters Patent No. 559,605, dated May 5,1896.

Application filed February 29, 1896. Serial No. 681,277 (No model.)

To all whom it may concern.-

Be it known that I, Lnwrs G. REYNOLDS, a citizen of the United States,residing at Day ton, in the county of Montgomery and State of Ohio, haveinvented certain new and usef ul Improvements in Machines for Paraffining Paper, of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, forming part of thisspecification.

For many years it has been customary to waterproof paper by saturatingthe paper in a bath of melted paraffin and then passing it betweenrollers where the surplus paraffin is pressed out, leaving the paperimpregnated with the paraffin-wax. This process is substantially a hotprocess, and the paper is usually fed to the bath of liquid paraffinfrom a roll and thence the web is fed to the pressurerolls. Anotherprocess has also long been in use which might be called a cold process.In this the paraffin is not melted, but is spread upon the paper byrubbing. Under this process, however, the paper is not impregnated, butonly a thin film of paraffin is spread on one or both sides of thesheet. Paper orpasteboard which has been subjected to the cold processis not rendered so thoroughly waterproof as with the hot process,because the films of wax in time wear off, leaving the paper withoutfurther waterproof qualities, while with the hot process thewaterproofing lasts the life of the paper. Of recent years there hasarisen a demand for pasteboard signs and the like which have beenrendered waterproof by parafiin, so that they can be exposed to theelements without damage, and a difficulty has presented itself in theeconomical manufacture of such signs. The cardboard cannot be mounted ona roll and the web fed to a bath of paraffin and thence to thepressure-rolls, as in the old hot process, because the cardboard isordinarily of too hard and stiff a quality, and the signs are usuallyprinted in sheets. The sheets cannot be dipped in the bath and then fedto the rolls, because the wax will at once congeal on whatever isemployed to hold the cardboard in placing it in the bath, and thesuccessive layers of wax thus formed soon become entirely unmanageable.All that has heretofore been able to be devised has been either to coatthe sheets of cardboard with a thin film by the cold process of rubbingor accomplish the same result by feeding the sheets to rollers, one ofwhich is partly submerged in aliquid paraffin bath. In either case thesame result is obtained. Only a thin film of wax is deposited on thesheet, and the cardboard signs are not rendered thoroughly waterprooffor the reasons above given.

It is the purpose of my invention to overcome this difficulty by amachine in which the bath of melted paraifin is so arranged andconstructed that sheets of stifi cardboard can be saturated withparaffin and at the same time fed to the pressure-rollers, whereby thecardboard may be rendered thoroughly waterproof to so continue the lifeof the paper.

In the drawings, Figure 1 is a front elevation of my improved machine.Fig. 2 is a vertical section of same in side elevation.

A and B are heavy metallic rollers of suitable dimensions, preferablymade of steel. These rolls are journaled in boxes aa, which are mountedin the sides of suitable standards O O, and screws I) care employedhearing between these journal-boxes and the crosspieccs of thestandards, so that the rolls may be properly adjusted and the requisiteamount of pressure obtained. \Vhen desired, gearing of any of theordinary kinds may be employed to obtain still greater pressure betweenthe rolls. Supported on suitable brackets dd, secured to the standards,is a tank D, within which the melted paraffin is placed, the paraflinbeing keptin a liquid state by steampipes or in any other convenientway. The lower roller B is partly submerged in this paraffin-bath, sothat when the machine is in operation a constant stream of paraffin iscarried up and to both rollers.

Mounted on the roller-shafts at one end are the intermeshing gear-wheelsE E, and the shaft of one of the rollers extends outside the standard Cand carries a tight and loose pulley F F, by means of which the rollersare driven by power in the usual way.

Secured by arms 6 c to the standards O O is a supplemental paraiiin-panG, which extends longitudinally the length of the rollers. This pan ispreferably rather shallow, and its contacting surface of the rolls.

the sheets, as hereinafter described, while inner longitudinal edge isslightly curved to conform tothe surface of the lower roller B and isarranged to fit in quite closely to the Mounted in the sides of the panand extending longitudinally through the pan a short distance from thebottom is a rodg, preferably of metal, and the pan itself is slightlyinclined outwardly, so that when full of liquid paraffin, as hereinafterdescribed, the surplus will overflow into the tank D.

Secured above and below to bars f f, fixed longitudinally between thestandards on the delivery side of the rolls, are a series of fingers hh, whose inner ends hug closely the surface of the rolls to guide anddeliver mounted on a set of rollers, one of which is shown at Hjournaled in arms secured to the standards, is a deliveryor carrier bandor set of strings Z for'holding and carrying off the sheets after theyhave passed the rolls.

The tank B being filled with melted paraifin kept liquid in anywell-known way, the machine is then set in operation. At once a streamof the liquid is carried up to the contacting surface of the rolls,thoroughly coatin 9; them with the liquid, and thetwo rollers contactingwith a great amount of pressure a considerable amount of the liquidfails to pass between the rolls, but flows back into the pan G, and,that being filled, thence back into the tank, so that while the machineis in operation there is a continuous flow of the liquid paraffin up tothe rolls and back through the pan into the tank. The operator thentakes the sheets of cardboard m, which have been previously printed, asdesired, and passes them one at a time under the rod g up to thecontacting surface of the rolls. In this way the cardboard becomesthoroughly saturated with the liquid paraffin before it enters the rollsand at the same time it can be fed thereto without the hands of theoperator in any way coming in contact with the paraffin. After passingthe rolls the fingers h h grasp the sheet, preventing it from stickingto either roll, and deliver it to the carrier, whence it is carriedofi": to be removed at the other end of the room.

In addition to enabling the operator to both saturate and feed thesheets without coming in contact with the paraffin, my machine hasadditional advantages in that the sheets can be fed in a continuousstream to the machine. Where the pan G is not employed, as in the oldermethods,each sheet fed to the rolls takes up the parafiin' that may beon the rolls'and in order that the upper roll may again become coatedthe operator has to wait for another paraffin within which one of therolls is partly submerged, of a pan secured near the contacting surfaceof the rolls, to catch the surplus liquid and through which pan thesheets i are fed to the rolls, substantially as shown and described. 7

J 2. In a machine for paraffining paper, the combination, withpressure-rolls mounted in suitable standards and a receptacle for liquidparaffin Within which one of the rolls is partly submerged, of a pansecured near the contacting surface of the rolls, to catch the surpl usliquid and a rod extending longi tudin ally through said pan, underwhich the sheets are fed to the rolls, substantially as shown anddescribed. I V

3. In a machine for paraffining paper, the combination, withpressure-rolls mounted in suitable standards with driving mechanismtherefor, and a receptacle for liquid paraffin secured to the standardsunder-n eath said rolls and within which receptacle the lower of saidrolls is partly submerged of a pan secured to said standards near thecontacting surface of the rolls and a rod extending longitudinallythrough said pan, under which the sheets are fed, said pan beingslightly inclined so that a constant stream of liquid paraffin is fed tothe rolls and back through the pan to the receptacle, substantially asshown and described.

LEWIS G. REYNOLDS. itnesses:

II. V. N UTT, GEORGE E. EASTON.

